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Proceedings Paper

Double laser diode speed sensor for contactless measures of moving targets
Author(s): Xavier Raoul; Thierry M. Bosch; Noel Servagent
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Paper Abstract

Our aim while developing a sensor exploiting spectral properties of optically disturbed laser diodes, was to introduce an alternative to already existing speed sensors. Production over assembly lines and other industrial applications can require contactless measurement of moving targets' velocity. Optical interferometry is already a possibility, but a sensor using Self-Mixing interferometry in a laser diode for industrial application can be an innovative solution. Optical feedback interferometry based sensors (with single laser diode or double laser diode architecture) propose low-cost and self-alignment. This paper presents two different architectures, the first one to validate theory and the other one to filter some perturbations we identified from the first set-up.

Paper Details

Date Published: 22 May 2002
PDF: 11 pages
Proc. SPIE 4827, Fifth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (22 May 2002); doi: 10.1117/12.468179
Show Author Affiliations
Xavier Raoul, Ecole des Mines de Nantes (France)
Thierry M. Bosch, ENSEEIHT (France)
Noel Servagent, Ecole des Mines de Nantes (France)


Published in SPIE Proceedings Vol. 4827:
Fifth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications

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